After decades of development of the vanadium titanomagnetite (VTM) ore in the Panzhihua district changes have taken place to the ore characteristics. In addition, preliminary research carried out in this area mainly focused on the separation and extraction of iron resources and lacked a systematic research focus on the process …
The separation of Fe, V, Cr, and Ti in the direct reduction products of South African vanadium–titanium magnetite has been successfully achieved by …
At present, vanadium–titanium magnetite is mainly utilized to produce hot metal and slag through the blast furnace (BF) process. However, the recovery of Fe, V and Ti are 70, 50% and less than 10% of raw ore respectively [].There are approximately 600,000 tons of titanium slag containing 22–25% TiO 2 produced by blast furnace …
Firstly, the separation of titanium from the leachate by hydrothermal method was studied. The results show that more than 99% of titanium in the leachate …
We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from vanadium‑titanium …
Zhao Longsheng et al. used the rotary kiln pre-reduction-electric furnace method to treat vanadium-titanium magnetite, separated iron, vanadium and titanium …
1. Introduction. Titanium dioxide waste acid (TDWA) is a highly acidic wastewater in the preparation of titanium white from vanadium–titanomagnetite by leaching with concentrated sulfuric acid and hydrolysis precipitation. 1−3 The waste acid of 5–6 m 3 with a concentration of 20% and the acid wastewater of 50–80 m 3 with a …
In this paper, magnetization roasting - low-intensity magnetic separation was performed on a pre-concentration concentrate obtained from an Australian hematite …
Keywords Vanadium–titanium magnetite · Smelting separation · Electric furnace smelting · Ecient utilization of iron ore Introduction South African vanadium–titanium magnetite is a complex mineral resource rich in iron, vanadium, titanium, and chro-mium [1–3]. Its ore composition is composed of more than 20 elements [4–6].
In this paper, magnetization roasting - low-intensity magnetic separation was performed on a pre-concentration concentrate obtained from an Australian hematite containing titanium and vanadium to realize the separation of titanium and vanadium. The results showed that an iron concentrate with TFe (total iron) grade of 58.71%, iron …
1. Introduction. The vanadium–bearing titanomagnetite (VBT) is a strategic and complex iron ore, which containing valuable metals of vanadium, titanium, and iron used as constituents of several alloys, whitepigments, and steel [1], [2], [3].In China, the gross reserve of titanium in VBT ore is estimated to be about 1.18 million tons, …
Vanadium-bearing titanomagnetite ore is an important mineral resource containing vanadium, titanium, and iron . It is widely distributed around the world mainly including China, Russia, America, and North Africa [].Especially in the Panxi region of China, the proven deposits account for more than 90% of total reserves in China [2, 3].At …
High-quality oxidized pellets are the basis to achieve high-efficiency utilization of vanadium–titanium magnetite (VTM) ores. Bentonite was used as a binder of VTM. The main phase composition of VTM is titanomagnetite and ilmenite. When the amount of bentonite is 1%, the compressive strength and dropping strength of VTM …
of 85.49% were obtained when the vanadium-titanium magnetite concentrate was reduced for 100 min at 1623 K with a C/O molar ratio of 2.5 and 8% CaCO 3, followed by separating at a magnetic field
Journal of Radioanalytical and Nuclear Chemistry, Vol. 263, No. 1 (2005) 23–28 Improved radiochemical separation of no-carrier-added vanadium-48 from proton irradiated titanium target M. L. Bonardi,1* E. Rizzio,2 M. Gallorini,2 F. Groppi,1 H. S. Mainardi1 1 Universitá degli Studi di Milano and National Institute of Nuclear Physics, INFN ...
In terms of titanium, the leaching rate was only 8.24%, revealing that the oxidation–reduction potential of the leaching solution was decrease after adding the iron powder, which could promote the hydrolysis of TiO 2-ions compared with iron-free powder, and achieve the selective separation of vanadium, iron and titanium.
Compared with the vanadium–titanium magnetite in China's Panzhihua and Chengde and Russia, New Zealand, and South Africa,[4–11] this mine not only has an ultra-low-grade vanadium–titanium magnetite, but also the characteristics of high vanadium and ultra-high titanium.[3,12–14] This mine is a composite iron ore
Vanadium slag (VS) is a by-product of vanadium titanium magnetite BOF steelmaking process and becomes an important material for vanadium products preparation. Sodium roasting-water leaching is a mainstream process for industrial production, but the water leaching residue (WLR) usually remains 1.0 wt% to 3.0 wt% V …
The separation of titanium from molybdenum was investigated in the same manner as for tlie titanium-vanadium separation. The results showed that separation of titanium from molybdenum could be achieved readily at pH 5-6 at a ratio of titanium to molybdenum of i :50. Table I shows the separation of titanium achieved from solutions containing all ...
The separation of titanium, vanadium and chromium in vanadium slag (VS) is a difficult problem restricting the comprehensive utilization of VS. This paper presents the first study on the separation of titanium, vanadium and chromium from oxalic acid leachate of VS. Firstly, the separation of titaniu …
Vanadium-containing titanium magnetite is the main source of V and Ti in the internal market. About 75% Fe, 82% V, and 44% Ti pass into iron concentrate during ore enrichment [].Therefore, the question of how to improve comprehensive utilization of vanadium-titanium magnetite concentrate (VTMC) is of decisive importance for the …
Abstract: Vanadium titanomagnetite (VTM) is an important mineral for developing titanium re-sources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium resources. Here, the separation of ilmenite from VTM ore is
This study addressed the separation and recovery of vanadium(IV), iron, and titanium from synthetic and real leach solutions of vanadium-bearing titanomagnetite using extractant P204 (di-(2-ethylhexyl) phosphate) and P507 (2-ethylhexyl hydrogen-2-ethylhexyl phosphonate). Based on the speciation analysis of vanadium in sulfuric acid …
Eficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separa-tion of the material. The fusibility of …
DOI: 10.1016/j.seppur.2020.117169 Corpus ID: 219743539; Efficient separation of vanadium, titanium, and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction process
The vanadium (V) and chromium (VI) was hard to separate directly due to the similar nature. In this paper, separation and recovery of vanadium (V) and chromium (VI) from a leaching solution was ...
The results showed that the effective selective separation of vanadium, iron and titanium could be obtained in which 97.39 % V and 88.62% Fe were dissolved into the solution and over 91.76% Ti was remained in leaching residue after leaching at 0.5 M H 2 SO 4, 110 °C for 1 h, then added 10% iron powder and continue to leaching for 2 h. Tafel ...
Mechanism on the Separation of Vanadium and Titanium from Vanadium Slag by Roasting with Ammonium Sulfate. by Guoquan Zhang *, Kun Wang and Mingzhi …
Request PDF | Efficient separation of vanadium, titanium and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction process | A ...
In the separation of raw ore, Zhang Yanhua and Han Yuexin et al. used weak magnetics to enrich vanadium-titanium magnetite with strong magnetism, and then selected gravity …
The separation of titanium, vanadium and chromium in vanadium slag (VS) is a difficult problem restricting the comprehensive utilization of VS. This paper presents the first study on the separation of titanium, vanadium and chromium from oxalic acid leachate of VS. Firstly, the separation of titanium from the leachate by …
Abstract and Figures. To effectively recycle and utilize vanadium and titanium resource from the vanadium slag, the crystallization and separation behaviors of V-spinel phase and Ti-spinel phase ...
